看到另一个二手的广告,也是那个高桥的,不过看起来太老了……居然12年了……
价格大概可以在700~750美元左右成交,大家帮我看看值不值?
多谢!
原文在 http://www.astromart.com/classif ... lassified_id=532662
Takahashi EM-1 German Equatorial Mount w/tripod
Single axis (RA) drive with crystal-controlled motor
Declination axis has a manual slow-motion control
Guiding paddle has 2X and stop buttons
Clutches for RA and DEC axes
Separate (manual) clutch for engaging the RA motor drive
Built-in polar scope with reticle
Adjustable for latitudes from 20 to 50 degrees
Includes a Dovetail adapter and one 8–pound counterweight
Operates on 6 Vdc, or 12 Vdc with included adapter
Sturdy Tak wood tripod has the shorter legs intended for astrophotography.
Minimum height is about 40 inches; Maximum height is about 50 inches
The EM-1 is a classic Takahashi mount intended for use with small refractors, or SCTs and MCTs up to eight inches aperture. It could also serve as an ultra-stable tracking mount for an SLR or medium format camera. The mechanical parts are all typical Tak quality. Metal and hardwood are used predominantly and the only plastic parts are knobs and the threaded front cover of the polar scope. Bearings in both axes are smooth with no play and the clutches are a joy to use. The tripod legs are easily disassembled from the head allowing the entire mount to fit in a small suitcase or duffle bag. A built-in scope and reticle make polar alignment relatively easy.
This mount has been used for about twelve years and there are a few nicks here and there in the paint on the tripod and head. Otherwise it is in good condition and ready to go. Takahashi recommends a maximum load of 22 pounds total for the scope and counterweights, but IMO this limit is conservative, and the EM-1 can handle larger, well-balanced loads.
Questions answered in advance:
1) Goto? No, it can’t be upgraded to the Temma goto system.
2) Can I add a Declination axis drive? I don’t know.
3) Can the RA drive reverse for southern latitudes? Yes, but a
switch on an internal circuit board must be changed.
I will double-box this mount for safe shipment - CONUS only. UPS ground shipment is free - for other methods buyer pays actual shipping charges including insurance. Payment can be made by personal checks and money orders, but shipment will be delayed for bank clearance (14-21 days). If paying with a U.S. Postal money order, I can ship immediately. No CODs or Paypal please.
The mount is sold as-is with no warranties expressed or implied. Buyer has seven days after receipt for inspection. If you are not satisfied with the condition, you may return it (at your risk and expense) for a refund less $30 for shipping. After seven days, the sale is final and no refund is offered for any reason. |